Answer this question truthfully
### Question: What causes Epididmyoorchitis?
### Response: Isolated epididymitis is usually caused by the spread of a bacterial infection from the urethra or the bladder. The most common infections that cause this condition in young heterosexual men are gonorrhea and chlamydia. In children and older men,E. coli and similar infections are much more common. This is also true in homosexual men.
The most common virus that causes isolated orchitis is mumps. It most often occurs in boys after puberty. Orchitis usually develops 4 - 6 days after the mumps begins. Because of childhood vaccinations, mumps is now rare in the United States. Orchitis may also occur along with infections of the prostate or epididymis.
Epididymoorchitis is often spread of infection from isolated orchitis or isolated epididymitis and may be caused by sexually transmitted diseases (STD), such as gonorrhea or chlamydia. The rate of sexually transmitted orchitis or epididymitis is higher in men ages 19 - 35. It is a major cause of hospital admissions in the miltary.